Grinding mill



Jan. 29, 1935. J. M. BYERS ET AL GRINDING MILL Filed July 22, 1932 2 Sheets-Sheet 1 (It 2102M Jan. 29, 1935. J BYERS T 1,989,586

GRINDING MILL Filed July 22, 1932 2 Sheefs-Sheet 2 gwuc/wbofis vJizhn/iili ers Daniel T WILV87 Patented Jan. 29, 1935 UNITED STATES PATENT OFFICE GRINDING MILL John M. Byers and Daniel T. Swavely,

Mich

Application July 22, 1932, Serial No. 624,094

4 Claims. (01. 83-22) it is to be understood that a grinding mill, in V accordance with this invention may be employed for any purpose or in any connection for which it is found applicable, and the invention has for its object to provide, in a manner as hereinafter set' forth, a mill of the class referred to, so constructed and arranged as to provide for expeditiously and economically grinding paint in a thoroughly satisfactory manner;

Further objects of the inventionare to provide, in a manner as hereinafter set forth, a grinding mill which is simple in its construction and arrangement-strong, durable, compact, thor-.

oughly efficient in its use, conveniently operated, readily assembled and comparatively inexpensive to manufacture.

To the above ends essentially, and to others which may hereinafter appear, the invention comsists of such parts, and such combination of parts which fall within the scope of the invention as claimed.

In the drawings:

Figure l is a front elevation, partly in longitudinal section, of the grinding mill.

Figure 2 is a cross sectional view of the grinding mill.

Figure 3 is an end view' thereof.

Figure 4 is a fragmentary view in side tion of a modification of the carrier.

Figure 5 is across section of the modified form shown in Fi re 4.

eleva- Figure 6 is a fragmentary view in cross section Referring to Figures 1, 2 and 3, the mill in-\ cludes a pair of spaced parallel frames 1, 2 of inverted V-shape coupled together as at 3. The frames support at their upper ends an operating shaft 4.

The shaft 4 extends outwardly from the frames, and one of the projecting end portions thereof is provided with a fast and a loose pulley 5, 6 respectively adapted to be operated from a prime mover, not shown. The shaft4 extends through a pair of sleeves '7, 8 and is journaled in the top of frame 2. The sleeve '7 is mounted .in the upper end of frame 1. A bearing cap 9 for sleeve '7 is secured upon the top of frame 1. A bearing cap, 10 for shaft 4 is secured upon the upper end The sleeve 8 is arranged inwardly of the upper,

endof frame 2. The sleeves '7, 8 are flanged at their inner ends, as at 11. The sleeve '7 exteriorly of frame 7 carries agear wheel 12.

Mounted upon shaft 4 between-sleeves '7 and 8 and secured to flanges 11, by holdfast means 13 is an open top, tiltable housing 14 of U-shape cross section having its lower portion 1'7 of substantially semi-circular contour and its upper,

portion 17' rectangular. The housing 14 is provided with oppositely disposed, spaced sets 15, 16 of spaced arcuate partitions or arms forming in connection with the lower portion 1'7 of housing 14, a; compartment 18 of cylindrical contour. The partitions are connected to braces 19 and not only form an apertured top for compartment 18, but also retainers for grinding reels to be presently referred to. Aremovable flanged cover 20 is provided for the open top of housing 14. A handle 21 is secured to cover 20. The end of housing 14 has openings 22 for the passage of shaft 4. Secured to frame 1 is an upstanding angle-shaped supporting arm 23 in which is journaled a shaft 24, the latter having its inner end supported in a bearing 25 anchored to frame 1. Shaft 24 extends outwardly from arm 23 and has its outer end formed with a crank 26 and a handle 27. Shaft 24 is provided with a pinion 28 which meshes with gear-12. The sleeve '7, gear 12, shaft 24, pinion 28, crank 26 and handle 27 provide for tilting housing 14 selectively in opposite directions upon shaft 4 for the purpose of emptying the housing when desired. The spaced partitions or arms provide combined, intakes and outlets for said -compartment.

Fixed to shaft 4 and bodily rotating therewith is'a carrier 29 including a circular'row of horizontally' disposed channel shaped spaced holders 30 of semi-oval contour and of a length to extend from a point in close proximity from the end 31 to a point in close proximity to the end 32 of housing 14. The carrier includes a pair of spaced hubs 33, 34 which are fixed to shaft 4 and a set of radially disposed arms 35 integral at their inner ends with a hub and at their outer ends with a holder, the latter being arranged inclose proximity to thegrinding surface 36 proa vided bythe wall of compartmentv 18. Loosely and revolubly mounted in each holder 30, aswell as extending therefrom is a cylinder grinding roll 37 coacting with the surface 36 for grinding the material. The length of eachroll corresponds to that of each holder; During the grinding action the rolls 3'7 revolve. The arms 35 are integral with the holders adjacent the ends of the of one set oppose in spaced relation the upper ends of the partitions of the other set.

With respect to Figures 4 and 5, the construction of the mill will be the same as that shown in Figures 1, 2 and 3, with this exception that the holders indicated at 38 will be of the same contour as that of the holders 30, but the body of holders 38 will be provided throughout with closely arranged perforations 39 for the passage of the material being acted upon.

Themodification shown in Figure 6 relates solely to the holders for the grinding rolls. The holder shown in Figure 6 indicated at, 40 is of semi-oval contour, of greater cross sectional length than that of holder 39 and is provided with a pair of superimposed grinding rolls 41, 42, the latter extending from the holder.

The modification illustrated in Figure '7 consists of providing a tubular operating shaft 43 tegral at its outer end with a holder 47 of the same form as holder 30. The inner end of sec 'tion 45 is provided with a piston head 48. The

section 46 is tubular and opens at its inner end, as at 49 into the shaft 43. The outer end of section 4'7 is enlarged as at 50, to provide a piston chamber 51 for the piston head 48. The section 45 extends into chamber 51. The arrangement as referred to provides whereby hydraulic pressure can be utilized to keep the grinding rolls in constant pressure against the grinding surface 36 When the form of device shown in Figure 7 is employed, a. cover 52 is mounted on partitions 15, 16 to arrest the outward movement of the grinding rolls through the openings between the opposed upper ends of the sets of partitions.

On the operation of shaft 4 of 43, the carrier will be bodily moved therewith and carry the grindingrolls for coaction with the grinding surface, wherebythe said rolls and surface will act in a manner upon the paint to grind it in a thoroughly efiicient manner. I

What we claim is:-

1. A grinding machine comprising a housing provided with partitions therein to provide in connection with the body of the housing a cylindrical compartment having its wall forming a grinding surface, a carrier rotating in said compartment and provided with a plurality of spaced channel shaped outwardly opening holders, a grinding means loosely and revolubly mounted in each holder and coacting with said grinding surface, said partitions forming a combined intake and outlet for said compartment, a rotatable operating shaft extending through the housing and having said carrier fixedly secured thereto for bodily'moving therewith, means mounted on said shaft and connected to said housing for tilting the latter, said shaft being tubular for the reception of a fluid, said carrier formed of extendible parts and non-extendible parts, said shiftable parts being slidably connected in the non-extendible parts, the latter communicating with said shaft to provide for the application of hydraulic pressure to the extendible parts, and said extendible parts including the holders.

connection with the body of the housing a cylindrical compartment havingits wall forming a grinding surface, a carrier rotating in said compartment and provided with a plurality of spaced channel shaped outwardly opening holders, a grinding means loosely and revolubly mounted in each holder and coacting with said grinding surface, said partitions forming a combined intake and outlet for said compartment, each of said holders beingperforated throughout, said shaft being tubular for the reception of a fluid, said carrier formed of extendible parts and non-extendible parts, said shiftable parts being slidably connected in the non-extendible parts, the latter communicating with said shaft to provide for the application of hydraulic pressure to the ex- .tendible parts, and said extendible parts including the holders.

3. A grinding machine comprising a housing having its lower portion of substantially semicircular contour, said portion having its inner face providing a grinding surface, oppositely disposed spaced sets of sidewise spaced upstanding arcuate partitions fixedly secured within and spaced throughout from the upper end of the housing, said partitions at their lower ends merging into and extending upwardly from the upper end of said lower portion, the inner faces of said partitions forming flush continuations of the upper ends of said grinding surface, said partitions in connection with'said lower portion providing said housing with a cylindrical compartment having a slotted top, said partitions forming combined intakes and outlets for said compartment throughout the top thereof, bracing means within the housing above said partitions and secured to the latter and the ends of the housing, a carrier rotating in said compartment and provided with a plurality of spaced channel-shaped outwardly opening holders, a. grinding means loosely and revolubly mounted in each holder and coacting with said surface and inner faces of the partitions for grinding the material, said housing having an open top, a removable closure for said open top, and the upper ends of said partitions and the said bracing means being spaced from said closure.

4. A grinding machine comprising a housing having its lower portion of substantially semicircular contour, said portion having its inner face providing a grinding surface, oppositely disposed spaced sets of sidewise spaced upstanding arcuate partitions fixedly secured within the housing and extending upwardly from the upper end of said lower portion, the inner faces of said partitions forming flush continuations of the up per ends of said grinding surface, said partitions in connection with the said lower portion providing said housing with a cylindrical compartment having a slotted top, said partitions forming combined intakes and outlets for said compartment throughout the top thereof, a carrier rotating in said compartment and provided with a plurality of spaced channel-shaped outwardly opening holders, a grinding means loosely and revolubly mounted in each holder and coacting with said surface and inner faces of the partitions for grinding the material, and each of said holders having each side thereof provided with spaced perforations throughout.

DANIEL T. SWAVELY.

JOHN M. BYERS. 

